﻿// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// Copyright (c) 2011, Dr. Masroor Ehsan
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the author nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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using System;
using System.Runtime.InteropServices;

namespace MaxTrader.Core
{
    public static class NetworkUtilities
    {
        public static bool IsConnectedToInternet()
        {
            var state = ConnectionStatusEnum.InternetConnectionOffline;
            return InternetGetConnectedState(ref state, 0);
        }

        [DllImport("wininet.dll")]
        private static extern bool InternetGetConnectedState(ref ConnectionStatusEnum state, int reserved);

        #region Nested type: ConnectionStatusEnum

        [Flags]
        private enum ConnectionStatusEnum
        {
            InternetConnectionModem = 0x1,
            InternetConnectionLan = 0x2,
            InternetConnectionProxy = 0x4,
            InternetRasInstalled = 0x10,
            InternetConnectionOffline = 0x20,
            InternetConnectionConfigured = 0x40
        }

        #endregion
    }
}